申请人:The Lubrizol Corporation
公开号:EP0976814A1
公开(公告)日:2000-02-02
A composition for reducing the copper-lead bearing corrosion of an engine that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising
(A) a borated dispersant with a total base number of from 20 to 160 on an oil-free basis, selected from Mannich dispersants, succinimide dispersants or olefin-carboxylic/carboxylate dispersants;
(B) a metal salt of a phosphorus acid; and
(C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and
(D) a borate ester.
The borated ester and borated dispersant provide from 20 to about 800 parts per million (ppm) mass of boron in the composition.
一种用于减少发动机铜铅轴承腐蚀的组合物,该组合物包括主要量的润滑粘度油和次要量的腐蚀减少添加剂,其中包括
(A) 硼酸盐分散剂,其总碱基数在无油基础上为 20 至 160,选自曼尼希分散剂、琥珀酰亚胺分散剂或烯烃-羧酸盐/羧酸盐分散剂;
(B) 磷酸的金属盐;以及
(C) 包含至少一种羧酸盐、苯甲酸盐或磺酸盐的金属过基组合物,其中金属为 锂、钠、钾、镁或钙,以及
(D) 硼酸酯。
硼酸酯和硼酸分散剂可在组合物中提供 20 至约 800ppm 质量的硼。